Verb:

মেশিন ইত্যাদির উন্নতি ঘটানো, পদোন্নতি ঘটানো,

subgrade's Usage Examples:

In transport engineering, subgrade is the native material underneath a constructed road, pavement or railway track (US: railroad track).

sub-ballast above a prepared subgrade/formation (see diagram).

It is designed primarily to reduce the stress on the subgrade.

the California pavement design method, and specify R-Value testing for subgrade soils and road aggregates.

Otherwise, it is built directly on top of the subgrade.

(sleepers, British English) and ballast (or slab track), plus the underlying subgrade.

subgrade.

When building a three layer flexible pavement, the subbase layer is not used and the base course is placed directly on the natural subgrade.

the land surface through which it passes, known to highway engineers as subgrade material.

California Bearing Ratio (CBR) test is a penetration test used to evaluate the subgrade strength of roads and pavements.

The first layer in the construction of such a surface is called the subgrade-- this is the layer of native material underneath the intended surface.

"Interrelationship of load, road and subgrade".

perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright and keep them spaced to the correct gauge.

(NAP) geocells reduced the vertical stresses at the interface between subgrade and base course, reduced permanent and creep deformations, increased elastic.

highway engineering, subbase is the layer of aggregate material laid on the subgrade, on which the base course layer is located.

surface layer will follow the crown established by the subgrade layer.

Scarification of the subgrade layer prior to application of the surface gravel layer.

year, which it reached after ten years, but continuous upgrades (wider subgrade, 75 kg/m rails, wagons with higher capacity and top speed, longer trains.

base course, which is normally placed on the subbase, which rests on the subgrade.

the construction site, the pavement constructed on the marine clay (as subgrade) will have less durability and requires lot of maintenance cost.

and road construction as a subbase layer reinforcing and protecting the subgrade.

In addition to reinforcement of the subgrade, subbase or base layer of roads and railways, cellular confinement is also.

procedure underwent a series of tests examining whether an increase of the subgrade tensile strength occurred.